Concept:
A meaningful sentence should begin with the principal clause, followed by descriptive and modifying phrases.
Step 1: Identify the main clause.
The sentence naturally begins with:
\[
(B)\quad \text{I appeal to the people of Delhi,}
\]
Step 2: Add the qualifying phrase.
\[
(C)\quad \text{as responsible citizens,}
\]
Step 3: Add the purpose.
\[
(D)\quad \text{to burn only green crackers}
\]
Step 4: Complete the statement.
\[
(A)\quad \text{following the guidelines of the Supreme Court.}
\]
The complete sentence becomes:
I appeal to the people of Delhi, as responsible citizens, to burn only green crackers following the guidelines of the Supreme Court.
Thus,
\[
(B),(C),(D),(A)
\]
\[
{\text{Option (B)}}
\]